N850 Nonmagnetic Steel Round Bar

• After-sales Service: Technical/Sample/Quality
• Warranty: Technical/Sample/Quality
• Type: Nonmagnetic Steel
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Technique: Rolled or Forged
• Application: Oil Field
• Model NO.: N850
• Surface Treatment: Polished
• Alloy: Nonmagnetic Steel
• Special Use: Oil Equipment
• Transport Package: Wooden Case
• Specification: max 1500mm diameter
• Trademark: SHUNFU
• Origin: China

Product Description

N850 Nonmagnetic Steel

We produce N850, Hastelloy C-22HS, non-mag material Steel Bars and Non Magnetic Hollow Bars.
 

1. CHEMICAL COMPOSITION

N850 is a special nonmagnetic, nickel chromium molybdenum alloy.

C	Cr	Mo	Fe	Co	Ni
max. 0,01	20,00 - 22,00	15,00 - 18,00	max. 2,0	max. 1,0	remainder

 

2. MECHANICAL PROPERTIES

Following mechanical properties (tested at room temperature) are achieved by a special cold-working process over the full length of the collar:

TEXT	OD	KSI	N/MM
Yield Strength (min.) 0,2%-offset method:	OD up to 10"	150 ksi	1035 N/mm²
Tensile Strength (min.):		160 ksi	1104 N/mm²
Elongation (min.):		15%	15%
Reduction of area (min.):		50%	50%
Impact energy (min.):		100 ft.lb	135 J
Endurance Strength / N=10(min.):		± 90 ksi	± 620 N/mm²
Hardness Brinell: (min.):		300-430 HB	300-430 HB

 

3. MAGNETIC PROPERTIES

Relative permeability: ≤ 1,005.
 

4. CORROSION RESISTANCE

Superior corrosion properties compared to other Ni-based alloys are given.
The material specified conforms to ANSI/NACE MR0175 / ISO 15156.
This alloy can be used in environments containing 1000 psia (7000 kPa) H2S at a chloride concentration of 180000 mg/L and any in situ pH up to 550°F (288°C). It can be used also in environments containing 500 psia (3500 kPa) H2S at a chloride concentration of 180000 mg/L, at any situ pH and in the presence of elemental sulfur up to 400°F (204° C)
 

5. NON-DESTRUCTIVE TESTING

• Magnetic inspection: Drill collars are 100% tested by a proprietary probe-testing process.
• Ultrasonic inspection: Each collar is ultrasonically inspected over 100% of the volume according to ASTM E 114, last edition as a minimum level.